Hexamer
六聚物
🗣️ 情景例句
Hello, this is ... What can I do for you?
喂， 我是……我能为你做点什么吗？
I'm going to tell him what to say.
我正要告诉他应该说什么。
What is the deadline for submitting the quotation?
报价截止日是哪一天？